That doctor specializes _____ children's illnesses.
A: for
B: at
C: in
D: on
第1题:
Please make us an offer CIF London () 20 metric tons groundnuts
A、for
B、at
C、in
D、upon
第2题:
A、for
B、at
C、on
D、in
第3题:
A. for
B. at
C. of
D. to
第4题:
We appreciate your cooperation and trust the shipment will prove ()your entire satisfaction.
A、for
B、at
C、forward
D、to
第5题:
David likes fish( )breakfast.
A. for
B. at
C. in